Walk-in tub



FIG. 1 is a is a perspective view of a walk-in tub in accordance with my invention;

FIG. 2 is a is a front elevational view thereof;

FIG. 3 is a is a rear elevational view thereof;

FIG. 4 is a is a right side elevational view thereof;

FIG. 5 is a is a left side elevational view thereof;

FIG. 6 is a is a top plan view thereof; and,

FIG. 7 is an exploded, perspective view thereof.

The broken lines illustrate environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a walk-in tub, as shown and described. 